Ignored fields in Solr 10.1

[Thomas Corthals]

Did Solr 10.1 break ignored fields?

Solr 10.0:

$ docker run -d -p 8983:8983 solr:10.0 solr-demo
0f32529b754d425ca69ea24946878b52ea6be92d98ae23d6cac83ed5996fb758

$ curl http://localhost:8983/solr/demo/update/json/docs -H 'Content-Type:
application/json' -d '{"id":"test","ignored_field":"foobar"}'
{
  "responseHeader":{
    "status":0,
    "QTime":2
  }
}

Solr 10.1:

$ docker run -d -p 8983:8983 solr:10.1 solr-demo
a7803cb73a2e7fce6aaa73630f0949efd06154646df0d0e9e5d7dcde38c2a65b

$ curl http://localhost:8983/solr/demo/update/json/docs -H 'Content-Type:
application/json' -d '{"id":"test","ignored_field":"foobar"}'
{
  "responseHeader":{
    "status":400,
    "QTime":48
  },
  "error":{
    "metadata":{
      "error-class":"org.apache.solr.common.SolrException",
      "root-error-class":"java.lang.NullPointerException"
    },
    "errorClass":"org.apache.solr.common.SolrException",
    "msg":"ERROR: [doc=test] Error adding field 'ignored_field'='foobar'
msg=null",
    "code":400
  }
}

Thomas